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git.ipfire.org Git - people/ms/u-boot.git/blob - common/env_sf.c
2 * (C) Copyright 2000-2010
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
6 * Andreas Heppel <aheppel@sysgo.de>
8 * (C) Copyright 2008 Atmel Corporation
10 * See file CREDITS for list of people who contributed to this
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License as
15 * published by the Free Software Foundation; either version 2 of
16 * the License, or (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 #include <environment.h>
31 #include <spi_flash.h>
35 #ifndef CONFIG_ENV_SPI_BUS
36 # define CONFIG_ENV_SPI_BUS 0
38 #ifndef CONFIG_ENV_SPI_CS
39 # define CONFIG_ENV_SPI_CS 0
41 #ifndef CONFIG_ENV_SPI_MAX_HZ
42 # define CONFIG_ENV_SPI_MAX_HZ 1000000
44 #ifndef CONFIG_ENV_SPI_MODE
45 # define CONFIG_ENV_SPI_MODE SPI_MODE_3
48 #ifdef CONFIG_ENV_OFFSET_REDUND
49 static ulong env_offset
= CONFIG_ENV_OFFSET
;
50 static ulong env_new_offset
= CONFIG_ENV_OFFSET_REDUND
;
53 #define OBSOLETE_FLAG 0
54 #endif /* CONFIG_ENV_OFFSET_REDUND */
56 DECLARE_GLOBAL_DATA_PTR
;
58 char *env_name_spec
= "SPI Flash";
60 static struct spi_flash
*env_flash
;
62 #if defined(CONFIG_ENV_OFFSET_REDUND)
67 char *res
, *saved_buffer
= NULL
, flag
= OBSOLETE_FLAG
;
68 u32 saved_size
, saved_offset
, sector
= 1;
72 env_flash
= spi_flash_probe(CONFIG_ENV_SPI_BUS
,
74 CONFIG_ENV_SPI_MAX_HZ
, CONFIG_ENV_SPI_MODE
);
76 set_default_env("!spi_flash_probe() failed");
81 res
= (char *)&env_new
.data
;
82 len
= hexport_r(&env_htab
, '\0', 0, &res
, ENV_SIZE
, 0, NULL
);
84 error("Cannot export environment: errno = %d\n", errno
);
87 env_new
.crc
= crc32(0, env_new
.data
, ENV_SIZE
);
88 env_new
.flags
= ACTIVE_FLAG
;
90 if (gd
->env_valid
== 1) {
91 env_new_offset
= CONFIG_ENV_OFFSET_REDUND
;
92 env_offset
= CONFIG_ENV_OFFSET
;
94 env_new_offset
= CONFIG_ENV_OFFSET
;
95 env_offset
= CONFIG_ENV_OFFSET_REDUND
;
98 /* Is the sector larger than the env (i.e. embedded) */
99 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
100 saved_size
= CONFIG_ENV_SECT_SIZE
- CONFIG_ENV_SIZE
;
101 saved_offset
= env_new_offset
+ CONFIG_ENV_SIZE
;
102 saved_buffer
= malloc(saved_size
);
107 ret
= spi_flash_read(env_flash
, saved_offset
,
108 saved_size
, saved_buffer
);
113 if (CONFIG_ENV_SIZE
> CONFIG_ENV_SECT_SIZE
) {
114 sector
= CONFIG_ENV_SIZE
/ CONFIG_ENV_SECT_SIZE
;
115 if (CONFIG_ENV_SIZE
% CONFIG_ENV_SECT_SIZE
)
119 puts("Erasing SPI flash...");
120 ret
= spi_flash_erase(env_flash
, env_new_offset
,
121 sector
* CONFIG_ENV_SECT_SIZE
);
125 puts("Writing to SPI flash...");
127 ret
= spi_flash_write(env_flash
, env_new_offset
,
128 CONFIG_ENV_SIZE
, &env_new
);
132 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
133 ret
= spi_flash_write(env_flash
, saved_offset
,
134 saved_size
, saved_buffer
);
139 ret
= spi_flash_write(env_flash
, env_offset
+ offsetof(env_t
, flags
),
140 sizeof(env_new
.flags
), &flag
);
146 gd
->env_valid
= gd
->env_valid
== 2 ? 1 : 2;
148 printf("Valid environment: %d\n", (int)gd
->env_valid
);
157 void env_relocate_spec(void)
160 int crc1_ok
= 0, crc2_ok
= 0;
161 env_t
*tmp_env1
= NULL
;
162 env_t
*tmp_env2
= NULL
;
165 tmp_env1
= (env_t
*)malloc(CONFIG_ENV_SIZE
);
166 tmp_env2
= (env_t
*)malloc(CONFIG_ENV_SIZE
);
168 if (!tmp_env1
|| !tmp_env2
) {
169 set_default_env("!malloc() failed");
173 env_flash
= spi_flash_probe(CONFIG_ENV_SPI_BUS
, CONFIG_ENV_SPI_CS
,
174 CONFIG_ENV_SPI_MAX_HZ
, CONFIG_ENV_SPI_MODE
);
176 set_default_env("!spi_flash_probe() failed");
180 ret
= spi_flash_read(env_flash
, CONFIG_ENV_OFFSET
,
181 CONFIG_ENV_SIZE
, tmp_env1
);
183 set_default_env("!spi_flash_read() failed");
187 if (crc32(0, tmp_env1
->data
, ENV_SIZE
) == tmp_env1
->crc
)
190 ret
= spi_flash_read(env_flash
, CONFIG_ENV_OFFSET_REDUND
,
191 CONFIG_ENV_SIZE
, tmp_env2
);
193 if (crc32(0, tmp_env2
->data
, ENV_SIZE
) == tmp_env2
->crc
)
197 if (!crc1_ok
&& !crc2_ok
) {
198 set_default_env("!bad CRC");
200 } else if (crc1_ok
&& !crc2_ok
) {
202 } else if (!crc1_ok
&& crc2_ok
) {
204 } else if (tmp_env1
->flags
== ACTIVE_FLAG
&&
205 tmp_env2
->flags
== OBSOLETE_FLAG
) {
207 } else if (tmp_env1
->flags
== OBSOLETE_FLAG
&&
208 tmp_env2
->flags
== ACTIVE_FLAG
) {
210 } else if (tmp_env1
->flags
== tmp_env2
->flags
) {
212 } else if (tmp_env1
->flags
== 0xFF) {
216 * this differs from code in env_flash.c, but I think a sane
217 * default path is desirable.
222 if (gd
->env_valid
== 1)
227 ret
= env_import((char *)ep
, 0);
229 error("Cannot import environment: errno = %d\n", errno
);
230 set_default_env("env_import failed");
234 spi_flash_free(env_flash
);
243 u32 saved_size
, saved_offset
, sector
= 1;
244 char *res
, *saved_buffer
= NULL
;
250 env_flash
= spi_flash_probe(CONFIG_ENV_SPI_BUS
,
252 CONFIG_ENV_SPI_MAX_HZ
, CONFIG_ENV_SPI_MODE
);
254 set_default_env("!spi_flash_probe() failed");
259 /* Is the sector larger than the env (i.e. embedded) */
260 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
261 saved_size
= CONFIG_ENV_SECT_SIZE
- CONFIG_ENV_SIZE
;
262 saved_offset
= CONFIG_ENV_OFFSET
+ CONFIG_ENV_SIZE
;
263 saved_buffer
= malloc(saved_size
);
267 ret
= spi_flash_read(env_flash
, saved_offset
,
268 saved_size
, saved_buffer
);
273 if (CONFIG_ENV_SIZE
> CONFIG_ENV_SECT_SIZE
) {
274 sector
= CONFIG_ENV_SIZE
/ CONFIG_ENV_SECT_SIZE
;
275 if (CONFIG_ENV_SIZE
% CONFIG_ENV_SECT_SIZE
)
279 res
= (char *)&env_new
.data
;
280 len
= hexport_r(&env_htab
, '\0', 0, &res
, ENV_SIZE
, 0, NULL
);
282 error("Cannot export environment: errno = %d\n", errno
);
285 env_new
.crc
= crc32(0, env_new
.data
, ENV_SIZE
);
287 puts("Erasing SPI flash...");
288 ret
= spi_flash_erase(env_flash
, CONFIG_ENV_OFFSET
,
289 sector
* CONFIG_ENV_SECT_SIZE
);
293 puts("Writing to SPI flash...");
294 ret
= spi_flash_write(env_flash
, CONFIG_ENV_OFFSET
,
295 CONFIG_ENV_SIZE
, &env_new
);
299 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
300 ret
= spi_flash_write(env_flash
, saved_offset
,
301 saved_size
, saved_buffer
);
316 void env_relocate_spec(void)
318 char buf
[CONFIG_ENV_SIZE
];
321 env_flash
= spi_flash_probe(CONFIG_ENV_SPI_BUS
, CONFIG_ENV_SPI_CS
,
322 CONFIG_ENV_SPI_MAX_HZ
, CONFIG_ENV_SPI_MODE
);
324 set_default_env("!spi_flash_probe() failed");
328 ret
= spi_flash_read(env_flash
,
329 CONFIG_ENV_OFFSET
, CONFIG_ENV_SIZE
, buf
);
331 set_default_env("!spi_flash_read() failed");
335 ret
= env_import(buf
, 1);
339 spi_flash_free(env_flash
);
346 /* SPI flash isn't usable before relocation */
347 gd
->env_addr
= (ulong
)&default_environment
[0];